Frame attachment for carpenters&#39; squares.



l. D. WALL FRAME ATTACHMENT FOR CARPENTERS SQUARE APPLICATION FILED HOV.1?; !91L lfatented Get. 29, 1918.

2 SHEETS-SHEEI 1.

W w 0 a ay 5 ATTORNEY? J. D. WALL.

FRAME ATTACHMENT FOR CARPENTERS SQUARES.

APPLiCATIOH HLED NOV. 1. [9|].

Patented Oct. 29, 1918.

2 SHEETS-SHEEK 2.

5 M W i Nam wWr W v 6 \/W w for endwise sliding movement. Said guide 19 holds the long and short arms of the square 20 in the slot 11. This guide sleeve 19, at its inner corner and the one nearest the work-engagingfaces 18 of the members 15 and 16, is provided With a hub 21 having a pair of axially alined and oppositely projecting screw -threaded studs 22 mounted in bores 23 formed in the members 15 and 16, at their axes. The flanges 13 of the straight edge bar terminate at the members 15 and 16 and, as one means for rigidly securing said members to the straight edge bar, the flanges 14 are extended between said members and rigidly secured thereto by rivets 24. The flanges 14, at the studs 22, are expanded, so that the bores 23may be extended therethrough and thereby afl'ord additional bearing surface for said studs.

Binding screws 25 have screw-threaded engagement with the edge portion of the guide sleeve 19, opposite from the hub 21,

Pivoted to the studs 22, for swinging movement over the outer faces of the members 15 and 16, is a pair of indicating bars 26 having reading edges, located in the same plane with the outer .edge of the main arm of the square 20, for cooperation. with the graduations on said members. The outer ends of the indicating bars 26 are connected, the one with the other and to the guide sleeve 19, for common swinging movement therewith by a pair of oppositely projecting screw-threaded studs 27, rigidly secured to a hub 28 integrally formed with the outer end of the guide sleeve 19 on the same edge thereof with the hub 21.

r Thumb-nuts 29, on the outer ends of the studs 22, hold the guide sleeve 19, members 15 and 16 and indicator bar 26 in assembled relation. The studs 27 are also provided with thumb-nuts 30, for frictionally clamping the edge portions 17 of the members 15 and 16 onto the guide sleeve 19 and thereby v hold the same in different adjustments, with Idspgct to each other.

A U-shaped guide 31 for the'short arm of the sqilare 20 has its transverse portion extended across-the face of the straight edge bar and its prongs embrace the flanges 13 and are notched at 32-to receive the same, and thereby slidably hold the guide 31 on the straight edge bar. A pair of fingers 33 on the guide 31 engage the opposite faces of the short arm of the square 20 and hold the same against lateral movement. The guide 31 is held in different adjustments on the straight edge bar by a pair of binding screws 34, having screw-threaded engagement with the prongs of said guide and im pinging against the flanges 14. It will be notedthat the outer surface of the transverse portion of the guide 31 is in the same plane with the work-engaging surface of the tie connection 12 and the workengaging surfaces 18 of the plates 15 and 16 and also affords a work-engaging surface, which cooperates with the work-engaging surfaces 18, when the tie connection .12 projects beyond the work. cated on the outer face of the straight edge bar, are two longitudinally extended scales 35, with their zero points located at the axes of the members 15 and 16.

From the above description, it is evident that by loosening the set screws 25, the long Marked or otherwise indiarm of the square 20 may be moved endwise in the guide 19, so that its zero end, with respect to the scale on its outer longitudinal edge, may be set different distances from the axes of the members 15 and 16'. ing the thumb-nuts 29, the guide 19 may be swung between the members 15 and 16 to By loosenset the armsof the square 20 in different predetermined angular positions on the work X by the use of the indicating bars 26 and cooperating graduations on said members. Also by swinging the guide 19 on its pivot, the zero end of the short arm of the square 20 may be set different. distances 1irom the working face of the straight edge Referring now to some of the different uses of the improved framing attachment, for instance, if a hip rafter is to be cut for a four-sided or common roof having a onethird pitch or an eight inch rise per foot run, the mark indicated at 12 on the outer longitudinal edge of the long arm of the square 20 will be set at the axes of ,the members 15 and'16, and the mark' indicated at 8 on the outer longitudinal edge of the short arm of the square will be set at the working face of the straight edge bar. l/Vit'h the square thus positioned, its long arm will give the level or seat cut and its short arm will give the plumb cut. Thelength of the rafter may be obtained by noting the read ing of the scales 35 at the inner section of the outer longitudinal edge of the short arm of the square with the working face of the straight edge bar, towit: eighteen and threefourths inches. 01', if taken in feet, will give the length of a hip rafter for a twentyfour foot house.

To secure parallel or proportional cuts for timbers of different lengths, it is only necessary to adjust the long arm of the square 20 Lasa na thumb-nuts 30 are loosened to release the members 15 and '16, as the aretullycovered.

by copyrights issued to me. By following these printed instructions on the members 15 and 1G. a mechanic may readily adjust a square with respect to the straightedged bar to ini'licatc any desired cut or cuts to he made in training a roof or other structure. It is also possible for a mechanic to measure an angle by placing the long and shortarms of his square into the angle to be measured, and then taking the reading at a point where either of the indicator bars 26 intersect the graduations indicated on the segmental outer edge of the respective members 15 and 16. Also, by taking the reading of this same angle, a mechanic ma set his miter box saw to make a cut on the same angle.

It is, of course, understood that the square 20 may be placed on the attachment in reverse order from that shown in the. draw ings, and, in which case, the small arm of the square would be held in the guide 19.

What I claim is 1 1. The combination with a carpenters square, of a straight edge bar having a pair of laterall spaced graduated segmental plates, a guide for holding the square between said plates and in different adjustments with respect to the straight edge bar, and an indicator bar cooperating with the graduations on each of the segmental plates, said guide and indicator bar beii'ig pivoted for swinging movement aroundthe axis of said plate.

The combination with a carpentei"s square, of a straight edge bar having a pair of laterally spaced graduated segmental plates, a guide for holding the square lietwcou said plates and in ditl'orent adjustments with respect to the straight edge bar, and an indicator bar cooperating with the graduations on each of the segmental plates, said guide and indicator har being pivoted and comm-ted "for common swinging movement around the axis of said plate.

3. The combination with a carpcntcfis square. of a straight edge bar having a graduated segmental plato,aslccvulike guide pivoted for swinging movement around the axis oi said plate and adapted to hold one of the arms of the square with freedom for cndwisc sliding movement therein, one of the inner edge surfaces of said guide extending radially from the axis of said plate, and means for clamplng one of the longitudinal edges of the arm of the square in the guide against its radial inner edge surface. 4*. The combination with a carpenters square, of a straight edge liar having a longit-udinal channel adapted to receive the square, a pair of segmental plates secured to the straight edge bar on opposite sides of the channel therein, and a guide pivoted at the axis of said plates for swinging movement therebetween and adapted to receive and hold one of the arms of the square with freedom for endwise adjustment.

The combination with a carpenters square, of a straight edge bar havin a l0n gitudinal channel adapted to receive the square, a pair of segmental plates secured to the straight edge baron oppositesides of the channel therein, a guide pivoted at the axis of said plates for swinging movement therebetween and adapted to receive and hold one of the arms of-tlie square with freedom for endwise adjustment, and means for securing said guide in different angular adjustments with respect to the plates.

(3. The combination with a carpenters square, of a straight edge bar having a longitudinal channel adapted to receive the square, a pair of graduated segmental plates secured to the straight edge bar on opposite sides of the channel therein, a guide for holding one of the arms of the square with freedom for endwise adjustment, and a pair of indicator bars coiiperatin g with the graduations on the segmental plates, said guide andindicator bars being pivoted and connected for common swinging movement around the axes of said plates.

7. The comblnatlon with a carpenters square. of a straight edge bar having a-longitudinal channel adapted to receive'tho square, a pair ot'graduated segmental plates JOHN D. \VALL. lVit m sses:

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